[casper] ROACH1 est_brd_clk()

What situations could cause est_brd_clk() to give the wrong answer? I have two ROACH1s and a Valon 5007.  Every time we check the Valon it puts out the required clock frequency, 1020 MHz, at about +7 dBm. When I initialize the ROACHs (roach1, roach2) from an ipython command line,

Re: [casper] temporary ROACH2 faults after power dips and spikes

Hi Jonathon, Your important input here warrants cc to the mailing list, hereby accomplished. We have switched to the FSP power supplies for new builds, and have repaired older ROACH2s a number of which have had failing XEALs (mostly) by replacing same with FSPs. We have I think done some

Re: [casper] ROACH1 est_brd_clk()

On 04/18/2018 10:53 AM, Gary, Dale E. wrote: What digitizer are these using?  We have had issues with the KATADC on ROACH2, which turns out to need some register initializations in order to function properly, and the symptom is a bad est_brd_clk() result. Hey, wow, Dale! That was fast.  Yes,

Re: [casper] KAT-7 KatADC on ROACH2

Hi Tom, I am resending my reply of about a month ago to another, similar question. Regards, Dale On Wed, Mar 7, 2018 at 8:14 AM, Gary, Dale E. wrote: > Hi Yan, > > This sounds like the problem we had until Matt Dexter and Dave MacMahon > determined that some KatADC

Re: [casper] ROACH1 est_brd_clk()

Hi Tom, What digitizer are these using? We have had issues with the KATADC on ROACH2, which turns out to need some register initializations in order to function properly, and the symptom is a bad est_brd_clk() result. Regards, Dale On Wed, Apr 18, 2018 at 1:48 PM, Tom Kuiper

Re: [casper] temporary ROACH2 faults after power dips and spikes

We have about 100 ROACH2s deployed, both on our site and in various lab systems, and have not seen this sort of behaviour in any of our boards. But, we don't have ADCs connected to any of them. There're only power, 4x 10G SFP copper cables and 1x 1G STP going into the back. The boards are

RE: [casper] temporary ROACH2 faults after power dips and spikes

Hi all, I thought I lost a Roach2 after a power issue. It would boot but had some strange behaviour. A reflash of the file system using tftproot from uboot seemed to fix it. Good luck. MM -Original Message- From: Jason Manley [mailto:jman...@ska.ac.za] Sent: 18 April 2018 08:13 AM To:

Re: [casper] KAT-7 KatADC on ROACH2

This is probably aimed at Jack now but someone else may have an answer to the question below. On 04/18/2018 11:33 AM, Gary, Dale E. wrote: This sounds like the problem we had until Matt Dexter and Dave MacMahon determined that some KatADC registers need to be set for correct ADC operation.